Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2010
Cash flows from operating activities:
Net loss	$ (31,019)	$ (118,502)	$ (264,252)
Adjustments to reconcile net loss to net cash used in operating activities:
Non-cash items	148,768	181,963	194,318
Changes in operating assets and liabilities, net of effects of business combinations:
Accounts receivable	22,996	(10,937)	812
Inventories	(2,156)	(2,941)	(7,715)
Deferred cost of revenue	42,264	43,977	14,147
Prepaid expenses and other current assets	12,437	5,403	(9,775)
Accounts payable and accrued expenses	(47,972)	(55,765)	(42,794)
Deferred revenue	(79,255)	(160,799)	(6,705)
Other assets and liabilities	(100,622)	2,357	28,376
Other, net	275	(7,676)	10
Net cash used in operating activities - continuing operations	(34,284)	(122,920)	(93,578)
Net cash used in operating activities - discontinued operations	0	(4,362)	(7,142)
Net cash used in operating activities	(34,284)	(127,282)	(100,720)
Cash flows from investing activities:
Proceeds from sales and maturities of investments	75,475	57,256	175,206
Proceeds from sale of Verint Systems, Inc. shares of common stock	0	76,475	0
Proceeds from sale of Ulticom, Inc., net of cash sold	0	2,627	0
Acquisition of businesses, net of cash acquired	(109,780)	(23,485)	(96)
Purchase of property and equipment	(19,037)	(20,342)	(23,444)
Capitalization of software development costs	(3,399)	(2,527)	(2,715)
Net change in restricted cash and bank time deposits	29,414	6,966	(58,774)
Proceeds from asset sales	1,421	27,345	60
Settlement of derivative financial instruments not designated as hedges	(1,256)	(33,506)	(19,075)
Other, net	172	(12)	(7)
Net cash (used in) provided by investing activities - continuing operations	(26,990)	90,797	71,155
Net cash provided by investing activities - discontinued operations	0	64,581	9,526
Net cash (used in) provided by investing activities	(26,990)	155,378	80,681
Cash flows from financing activities:
Debt issuance costs and other debt-related costs	(15,276)	(4,039)	(152)
Borrowings under lines of credit	0	12,000	0
Repurchase of convertible debt obligations	0	0	(417,282)
Proceeds from borrowings, net of original issuance discount	597,136	0	0
Repayment of bank loans, long-term debt and other financing obligations	(593,580)	(44,163)	(6,088)
Repurchase of common stock	(4,527)	(1,906)	(359)
Net proceeds (payments) from issuance (repurchase) of common stock by subsidiaries	(1,655)	36,641	(106)
Excess tax benefits from stock awards plans	847	815	0
Proceeds from exercises of stock options	14,587	0	0
Dividends paid to noncontrolling interest	(1,930)	(2,191)	(4,145)
Other, net	(1,969)	0	0
Net cash used in financing activities - continuing operations	(6,367)	(2,843)	(428,132)
Net cash provided by financing activities - discontinued operations	0	(21,467)	(63,803)
Net cash used in financing activities	(6,367)	(24,310)	(491,935)
Effects of exchange rates on cash and cash equivalents	1,888	2,732	7,919
Net decrease in cash and cash equivalents	(65,753)	6,518	(504,055)
Cash and cash equivalents, beginning of period including cash of discontinued operations	581,390	574,872	1,078,927
Cash and cash equivalents, end of period including cash of discontinued operations	515,637	581,390	574,872
Less: Cash and cash equivalents of discontinued operations at end of period	0	0	(13,190)
Cash and cash equivalents, end of period	$ 515,637	$ 581,390	$ 561,682